Save part to disk and share using content provider

Fixes #1508 and fixes #1468

data/src/main/java/com/moez/QKSMS/repository/ImageRepostoryImpl.kt

@@ -22,14 +22,8 @@ import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.graphics.Matrix
-import android.media.MediaScannerConnection
 import android.net.Uri
-import android.os.Environment
 import androidx.exifinterface.media.ExifInterface
-import java.io.File
-import java.io.FileNotFoundException
-import java.io.FileOutputStream
-import java.io.IOException
 import javax.inject.Inject
 
 class ImageRepostoryImpl @Inject constructor(private val context: Context) : ImageRepository {
@@ -58,24 +52,4 @@ class ImageRepostoryImpl @Inject constructor(private val context: Context) : Ima
         return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true)
     }
 
-    override fun saveImage(uri: Uri) {
-        val type = context.contentResolver.getType(uri)?.split("/") ?: return
-        val dir = File(Environment.getExternalStorageDirectory(), "QKSMS/Media").apply { mkdirs() }
-        val file = File(dir, "${type.first()}${System.currentTimeMillis()}.${type.last()}")
-
-        try {
-            FileOutputStream(file).use { outputStream ->
-                context.contentResolver.openInputStream(uri)?.use { inputStream ->
-                    inputStream.copyTo(outputStream, 1024)
-                }
-            }
-        } catch (e: FileNotFoundException) {
-            e.printStackTrace()
-        } catch (e: IOException) {
-            e.printStackTrace()
-        }
-
-        MediaScannerConnection.scanFile(context, arrayOf(file.path), null, null)
-    }
-
 }

data/src/main/java/com/moez/QKSMS/repository/MessageRepositoryImpl.kt

@@ -25,9 +25,12 @@ import android.content.ContentValues
 import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
+import android.media.MediaScannerConnection
 import android.os.Build
+import android.os.Environment
 import android.provider.Telephony
 import android.telephony.SmsManager
+import android.webkit.MimeTypeMap
 import androidx.core.content.contentValuesOf
 import com.google.android.mms.ContentType
 import com.google.android.mms.MMSPart
@@ -54,6 +57,10 @@ import io.realm.Realm
 import io.realm.RealmResults
 import io.realm.Sort
 import timber.log.Timber
+import java.io.File
+import java.io.FileNotFoundException
+import java.io.FileOutputStream
+import java.io.IOException
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -132,6 +139,33 @@ class MessageRepositoryImpl @Inject constructor(
                 .findAllAsync()
     }
 
+    override fun savePart(id: Long): File? {
+        val part = getPart(id) ?: return null
+
+        val extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(part.type) ?: return null
+        val date = part.messages?.first()?.date
+        val dir = File(Environment.getExternalStorageDirectory(), "QKSMS/Media").apply { mkdirs() }
+        val fileName = part.name?.takeIf { name -> name.endsWith(extension) }
+                ?: "${part.type.split("/").last()}_$date.$extension"
+        val file = File(dir, fileName)
+
+        try {
+            FileOutputStream(file).use { outputStream ->
+                context.contentResolver.openInputStream(part.getUri())?.use { inputStream ->
+                    inputStream.copyTo(outputStream, 1024)
+                }
+            }
+        } catch (e: FileNotFoundException) {
+            e.printStackTrace()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+        MediaScannerConnection.scanFile(context, arrayOf(file.path), null, null)
+
+        return file.takeIf { it.exists() }
+    }
+
     /**
      * Retrieves the list of messages which should be shown in the notification
      * for a given conversation